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  <title>Open database persistently</title>
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  <div id="layout-content"><div id="function.dba-popen" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">dba_popen</h1>
  <p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">dba_popen</span> &mdash; <span class="dc-title">Open database persistently</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-function.dba-popen-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>dba_popen</strong></span>
    ( <span class="methodparam"><span class="type">string</span> <code class="parameter">$path</code></span>
   , <span class="methodparam"><span class="type">string</span> <code class="parameter">$mode</code></span>
   [, <span class="methodparam"><span class="type">string</span> <code class="parameter">$handler</code></span>
   [, <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$...</code></span>
  ]] ) : <span class="type">resource</span></div>

  <p class="para rdfs-comment">
   <span class="function"><strong>dba_popen()</strong></span> establishes a persistent database instance
   for <code class="parameter">path</code> with <code class="parameter">mode</code> using
   <code class="parameter">handler</code>.
  </p>
 </div>

 <div class="refsect1 parameters" id="refsect1-function.dba-popen-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>

    
     <dt>
<code class="parameter">path</code></dt>

     <dd>

      <p class="para">
       Commonly a regular path in your filesystem.
     </p>
     </dd>

    
    
     <dt>
<code class="parameter">mode</code></dt>

     <dd>

      <p class="para">
       It is <em>r</em> for read access, <em>w</em> for
       read/write access to an already existing database, <em>c</em>
       for read/write access and database creation if it doesn&#039;t currently exist,
       and <em>n</em> for create, truncate and read/write access.
      </p>
     </dd>

    
    
     <dt>
<code class="parameter">handler</code></dt>

     <dd>

      <p class="para">
       The name of the <a href="dba.requirements.html" class="link">handler</a> which
       shall be used for accessing <code class="parameter">path</code>. It is passed 
       all optional parameters given to <span class="function"><strong>dba_popen()</strong></span> and 
       can act on behalf of them.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>

 <div class="refsect1 returnvalues" id="refsect1-function.dba-popen-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns a positive handle on success 或者在失败时返回 <strong><code>FALSE</code></strong>.
  </p>
 </div>

 <div class="refsect1 seealso" id="refsect1-function.dba-popen-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="function"><a href="dba_open.html" class="function" rel="rdfs-seeAlso">dba_open()</a> - Open database</span></li>
    <li class="member"><span class="function"><a href="dba_close.html" class="function" rel="rdfs-seeAlso">dba_close()</a> - Close a DBA database</span></li>
   </ul>
  </p>
 </div>

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